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Colour

#2F333C

  • #2F333C
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2F333C is a blue with RGB values 47, 51, 60 and HSL 222°, 12%, 21%. It is a dark colour, so white text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F333C#2F333C
HEX#2F333C
RGBrgb(47, 51, 60)
RGB (0–1)0.1843, 0.2, 0.2353
RGB percentages18.4%, 20%, 23.5%
HSLhsl(221.5, 12.1%, 21%)
HSV / HSBhsv(221.5, 21.7%, 23.5%)
CMYK21.7%, 15%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,093,308
CSS custom property--colour: #2F333C;

Brightness & contrast

Relative luminance0.03298WCAG 2.x, 0 is black and 1 is white
Perceived brightness51 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.65:1
Contrast with white12.65:1WCAG normal text: AAA
Contrast with black1.66:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#D0CCC3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#30343Cno red cones; affects about 1% of men; ΔE 0.8 from the original
Deuteranopia#2F323Cno green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#2C3536no blue cones; rare, and affects men and women equally; ΔE 6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.65:1WCAG large text: AAA
Contrast with black, large text1.66:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.1Black · ΔE 22.1Dim grey · ΔE 24Slate grey · ΔE 32.1Gray · ΔE 33Light slate grey · ΔE 35.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.12, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C382F
Analogous#2F393C, #322F3C
Triadic#3C2F33, #333C2F
Split complementary#3C322F, #393C2F
Tetradic#3C2F39, #3C382F, #2F3C32

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8F97A8
Lighter +30%#737C91
Lighter +20%#5C6475
Lighter +10%#454B59
Darker −10%#191B1F
Darker −20%#020203
Darker −30%#000000
Darker −40%#000000
More saturated +25%#222E49
Less saturated −25%#363636

Channel breakdown

R47
G51
B60
Red47 (18.4%)
Green51 (20%)
Blue60 (23.5%)
Hue221.54°
Saturation (HSL)12.15%
Lightness20.98%
Dominant channelBlue
Hex per channelR 2F · G 33 · B 3C

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Every value on this page was computed from “2f333c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.